Wire weaving machines



Nov. 14, 1961 F. BERGANDI WIRE WEAVING MACHINES Filed July 18, 1958 I -F?AA/K BERGAND/ IN VENTOR.

Arroeus United States Patent 3,008,497 7 I WIRE WEAVING MACHINES Frank Bergandi, Alhambra, Calif. (2411 Chico Ave., El Monte, Calif.)

Filed July 18, 1958, Ser. No.-749,354

3 Claims. 01. 140-29234 This invention relates to new andimproved wire weaving machines. More specifically it relates to machines for weaving wire coils so as to form a wire net used asfencing or. thelike. r r

I In U.S. Patent No. 2,625,961 there is described a satisfactory wire weaving machine which is used so as to form pairs of coils of wire simultaneously and to weave these wires together-so as'to form wire netting. 'The machine described in this patent includes an operating and'control mechanism from which there extends a shaft carrying a chuck. This chuck in turncarrie's an elongated generally rectangular mandrel about which pairs of wire, coils are formed as the -shaft rotates. As these coils of wire areformed they pass along the lengthof this mandrel and are woven together with other wire coils positioned adjacent to the mandrel so as to form a wire'net. Periodically in the machine shown in this patent the wire coils created on the mandrel are cut an and the adjacent ends of these.

coils are twisted together in forming a'completewir'e net.

' With machines of the type indicated'in this aforenoted patent some diificulty has been encountered in accurately controlling the weaving operation. When a wire coil for one reason or another is imperfectly formed or does not weave satisfactorily it is fairly difficult with'machines as indicated in this patent to adequately control the weaving-processf 'sojas 'to'avoid creating an imperfect wire'net. The wires in such imperfect nets. may be tangledin an undesired manner or" may be miswovenin one manner or another. It is a comparatively difficult task to remedy such misweaving withthe'machine indicated in the aforegoing patent. Whenever any misweaving occurs a commercially significant amount of wire has to be destroyed in order to clear the machine so as to proceed with a satisfactory operation of the machine.

An object of the present invention is to provide a new and improved wire weaving machine. A more specific object of this invention is, however, to provide an improved structure for use with wire netting or weaving machines of the general type described in the U.S. Patent #2,625,96l, which structure serves to control the weaving operation so as to avoid misweaving. A more specific object of this present invention is to provide new and improvide g iide means for use in machines of the type described in this patent. Another object of this invention is to provide means for stopping these machines whenever, for any reason, misweaving starts to occur.

Further objects of this invention as well as many advantages of it will be fully apparent to those skilled in the art to which the invention pertains from a detailed consideration of the remainder of this description including the appended claims and the accompanying drawing in which:

FIG. 1 is a side elevational view of a wire netting or weaving machine embodying this invention;

FIG. 2 is an enlarged side elevational view of a part of the machine indicated in FIG. 1;

FIG. 3 is a cross sectional view taken at line 33 of FIG. 2; and

FIG. 4 is a perspective view of parts employed in the machine illustrated.

As an aid to understanding the invention it can be stated in essentially summary form that it involves the use of improved guide and cutofi switch means in a wire forming machine. Both of these means are located immediately adjacent to the portion of the machine where the weaving operation occurs, and the guide means serve to ade quately control the wire coils being woven so as to prevent them from bending out of the desired configuration, and

the cutoff means employed serves to control the weaving operation of the machine in the event that imperfectly formed wire coils are for any reason created or in the event that misweaving occurs. I

The invention is best more fully explained by referring directly to the accompanying drawing illustrating a wire netting or weaving machine 10 of the type illustrated in the aforenoted U.S. patent. This machine includes a wire forming section A, a cutoif mechanism B, a deviceC for twisting together the ends of newly formed adjacent wire coils, and an operating and control mechanism D, all substantially as indicated in this preceding patent except as otherwise specifically indicated herein. From the operating and control mechanism D a shaft 12 extends into the wire storming section A." The shaft 12 carries a chuck 14 which in turn carries an elongated, generally rectangular mandrel 16. This mandrel extends through a first guide 18 and then through a second guide 20 and terminates immediately adjacent to the cutoff mechanism B. This first guide 18 serves to create these coils 24 about the mandrel 16 as the mandrel rotates from strands; of wire (not shown) as indicated in the aforegoingfpatent. As. can be seen in the drawing wire. netting 22 such as chain-link" fencing is woven from a pair-of coils of wire 24 passing:

around the mandrel 16.

With the present invention the guide 20 includes identical helical coils 26 and 28 which are mounted by means of screws 30 and 32 on a cradle 34. This cradle is in turn mounted upon a carriage 38 so that its position in the wire tending completely around the mandrel 16 at thefend thereof adjacent to the operating and controlling mechanism D. Within the coils 26 and 28 there are mounted retainers 42 as indicated in FIG. 4 of the drawings. These retainers fit against the coils 24 on opposite sides of the mandrel 16 and are located about this mandrel and fit closely against the interiors of the coils 26 and 28.

Each of the retainers 42 has an end flange 44 which normally bears against the ring 40 in order to hold these retainers in place. The normal motion of the mandrel 16 and the coils 24 upon this mandrel serves to tend to hold the flanges 44 against the ring 40 in order to hold the retainers 42 in position at all times. The interior surfaces 46 of these retainers 42 fit flat against the sides of coils 24 on the mandrel 16 in order to prevent these coils from moving out of the desired configuration along this mandrel. At the same time the coils 26 and 28 engage the coils of wire 24 so as to control their motion along the mandrel 16 as the mandrel rotates. Further, the retainers 42 act similar to bearings and hold the mandrel 16 and the coils of wire 24 in the correct position in the center of the coils 26 and 28 so as to prevent the mandrel 16 from moving or whipping back and forth. By so doing the retainers 42 eliminate the cause of much misweaving of the machine 10.

This serves to prevent the coils 24 from bending in an undesired manner as they move through the guide 20 and are woven upon the wire netting 22 during normal operation of the machine 10. As a result of the use of these retainers the efliciency of the machine 10 is improved a very definite amount. If however, for any reason the coils 24 become bent, as, for example, through misweaving or by these coils being accidentally bent in another manner to an undesired configuration the cutoif switch means 48 employed with this invention are brought into operation. These cutoff means consist of a switch 50 from which there extends an actuating arm 52. This actuating arm is 10- Patented Nov. 14, 1961 cated immediately adjacent to the coils 24 at the end of the mandrel 16 at the point where these coils are woven into the net or fence 22. When for any reason, any of the coils 24 are not in proper dimension and shapeand extend beyond their normal path, the arm 52 is engaged; at this point the switch S is actuated so as to stop the operating and control mechanism D connected to this switch by means of wire 54. This is preferably done by disengaging a clutch 56 within the mechanism D" so as to stop the mandrel 46 from rotating.

Whenever misweaving occurs in the machine the coils 24 tend to be bent not only at the location of thisweaving, but along their entire lengths. The retainers 42' prevent such undesired bending, and hold the coils 24 in the correctposition on the mandrel 16 in this event. As such bending occurs the cutoff means 48 stops the mandrel 16 from rotating, enabling appropriate corrective measures to be made with a minimum loss of. wire and time. Thus, 'the retainers 42. eliminate. the necessity for rethreading wires along the full length of the mandrel 16 and into the guide ZtHf misweaving andbending' of wires occurs.

From the aforegoing it will be seen that the cutoilmeans and guide means herein described operate in conjunction with one another so as to achieve accurate and precise control of the weaving operation of the machine .10.

Because of the use of the means herein described wire netting or weaving machines as indicated can be operated much more profitably and much more rapidly than prior related machines as shown in the aforenoted US. patent.

I claim:

1. In a wire netting machine for creating fiat wire coils and weaving such flat wire coils into a wire netting, said machine having an elongated generally rectangular mandrel, first guide means for creating a pair of flat wire coils around one end of said mandrel during rotation of said mandrel, a pair of guidecoils extending around. an extremity of said mandrel remote from said first guide means, said guide coils serving as a second guide means for controlling the positions opposite edges of'coils' created t rotated within said guide coils during therotation 0f said mandrel; and means for holding saidretainers within said guide coils.

2. A wire nettingmachine as defined in claim l wherein said means .forholding said retainer means within said; guide coils comprises thrust ring means rigidly mounted on said machine around said. mandrel adjacent to said guide coils onthe sides thereof adjacentto said first guide means and flange meansformed on each of said retainers, said flange means fitting; against said thrustring 3. A wire netting machine as defined in claim 1 includ ing cutoff switch means for stopping. the rotation of said mandrel. upon a flat wire coil moving away from saidmandrel in other than anormal path, said cutoff switch means being mountedadjacent to'the end of said mandrel and being operatively connected to said means for rotating said mandrel and including an actuating arm which, when engaged, actuates saidswitch means in order tostop rotation of said mandrel.

References Cited in the file of this patent UNITED STATES PATENTS- 933,476 Lloyd m Sept. 7}190'9' 2,262,994 Dickey Nov; l8; 1941 2,625,961 Bergandi; Jan. 201.1953 2.,694,418 Bergstronr Nov. 16; 1954' 2,961,012"

I Freundlich Nov. 22", 196i) UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent Noa 3 OO8 49Z November l4 1961 Freak Bergendi rtified that error appears in the above numbered pat- It is hereby ce F at the said Letters Patent should read as entrequiring correction and th corrected below Column 4, line 8 vfer Side read Sides e u Signed and sealed this 29th day of May .1962o (SEAL) Attest:

ERNEST W. SWIDER Attesting Officer I DAVID L. LADD Commissioner of Patents 

